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Just annotations of little "how to's", so I know I can find how to do something I've already done when I need to do it again, in case I don't remember anymore, which is not unlikely. Hopefully they can be useful to others, but I can't guarantee that it will work, or that it won't even make things worse.
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Old

["SOLVED"] Weird failure in bash string comparison

Posted 05-02-2016 at 01:43 AM by the dsc (linux-related notes)
Updated 05-02-2016 at 01:52 AM by the dsc

A string produced by a given command is somehow different from a string produced by "catting" a file produced by redirecting the output of the very same command. That's weird, if you ask me.

The "solution" is not to compare them both, but create a second file from the "same" redirection, and then strings from "catting" those files. Then the comparison won't always say the strings are different.

Code:
#!/bin/bash
apps=$(ps -axo
...
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Posted in Uncategorized
Views 100 Comments 0 the dsc is offline
Old

Setting asymmetric correspondence between screen and mouse "area"

Posted 04-28-2016 at 07:57 AM by the dsc (linux-related notes)
Updated 04-28-2016 at 08:44 AM by the dsc
Tags ergonomy, mouse

Like the common acceleration feature, but asymmetric. So you can reach the ends of the screen with whatever range of motion "feels right", even if it's actually "wrong".

You basically misappropriate this spreadsheet:

https://docs.google.com/spreadsheets...gid=1008975224

(Thanks to whomever came up with it!)

Perhaps drawing two rectangles one inside the other may help...
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Posted in Uncategorized
Views 136 Comments 0 the dsc is offline
Old

[MYSTERY SOLVED] What does "echo ???????????????" really do?

Posted 04-20-2016 at 08:39 PM by the dsc (linux-related notes)
Updated 04-21-2016 at 05:07 PM by the dsc

It seems to alternate between listing an Nth file (somewhat obscurely related with the number of question marks) on the current folder, or giving some "history" entry, I guess.

That's weird.

Code:
22:54 **ROOT** /# echo ?
?
22:54 **ROOT** /# echo ??
??
22:54 **ROOT** /# echo ???
bin dev etc lib mnt opt run smb srv sys tmp usr var
22:55 **ROOT** /# echo ????
boot home proc root sbin
22:55 **ROOT** /# echo ?????
...
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Posted in Uncategorized
Views 202 Comments 4 the dsc is offline
Old

[WORK-AROUND] Bug on dragging windows of KDE/QT apps under openbox

Posted 04-12-2016 at 05:54 PM by the dsc (linux-related notes)
Updated 04-12-2016 at 05:56 PM by the dsc
Tags bug, kde, openbox

If you accidentally (or not) click/hold and drag the left mouse button from the inner area ("client" or "any empty area") in a KDE/QT window, it starts to be dragged/moved along, but it's not dropped when you release the button, unlike the behavior with GTK windows (at least GTK2, I guess). You got to press "enter" or "esc", I guess.

Presumably that doesn't happen under KDE proper/kwin, maybe not even with other window managers, but I didn't...
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Posted in Uncategorized
Views 77 Comments 0 the dsc is offline
Old

Disable the annoying command-not-found handler on Ubuntu

Posted 04-04-2016 at 06:17 PM by the dsc (linux-related notes)
Updated 04-04-2016 at 06:18 PM by the dsc

Add on .bashrc:

Code:
unset command_not_found_handle
alias cmdhelp=/usr/lib/command-not-found
So if it's just a typo there's no annoying mini-hang.

I'd rather have something like a "shopt -s safe-command-spell" thing than this, or at least as a first thing.

The alias is just in case you'd rather use for a command you thought you had installed. Sometimes the commands are under somewhat obscure package names, so it can...
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Posted in Uncategorized
Views 136 Comments 0 the dsc is offline

  



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